When driving on dirt, it actually causes the car to take longer to stop.
The biggest problem is that my speedo is driven off the front wheels ABS sensors, so I can't just pull the fuse.
Was thinking about these 2 options:
1. switch onto the power supply for the ABS motors. This would require either one big relay or multiples as it has an 60A fuse on it.
2. putting a switch onto one of the rear ABS sensors. This would put the system into "failsafe" mode ie no ABS operation, but brakes & speedo still work.